| article html file updated | 7 February 2020 07:29 CET | Update | https://www.mdpi.com/1996-1944/9/4/294 |
| article html file updated | 5 May 2019 18:12 CEST | Update | - |
| article html file updated | 27 March 2019 02:19 CET | Update | - |
| article html file updated | 28 April 2016 11:10 CEST | Update | - |
| article html file updated | 19 April 2016 14:31 CEST | Original file | - |
| article xml uploaded. | 19 April 2016 14:29 CEST | Original file | https://www.mdpi.com/1996-1944/9/4/294/xml |
| article pdf uploaded. | 19 April 2016 14:29 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/4/294/pdf |
